Sash-balance.



J. E. RICHARDSON.

SASH BALANCE* APPLICATION FILED 00T.so, m.

LQLQ Patented Ma124, 19ML` IEL/ i @s Mw @M fw SH01/neig:

UNITED sraajns rarENT OFFICE.

JOHN EDWARD RICHARDSON, OF WILCOE, WEST VIRGINIA.

SASH-BALANCE.

. the invention, such as will enable others skilled in the art to which it appert-ains to make and use the same.

This invention relates to builders hardware, and more especially to sash balances; and the objectV of the same is to produce a spring-actuated' device intended to be inserted in the edge of either sash and to travel against the frame, so that the spring is wound" as the sash is drawn downward and its unwind-ing tends to lift the sash, and therefore the use of weights'and cords is avoided. e

A This object is carried out by constructing the balance in the manner hereinafter more' fully described and claimed and as shown in the drawings wherein- Figure l is an inside elevation of a window showing the frame and the sash partly in section and indicating the balance in place. Fig. 2 is an enlarged elevation of the balance itself removed from the window frame, parts bein broken Vaway to illustrate the attachment 0F the spiral spring. Fig. 3 is a plan view and Fig. 4 an inner edge elevation of the balanceA alone. Fig. 5 is a cross section on the line 5 5 of Fig. 2.

In the drawingswthe letter F designates the frame and S the sash which may be either the upper or lower sash. In the side bar of the sash is cut arecess R into which is inserted the deviceforming the subject matter of thepresent invention. This includes a metalliccasing of strap iron made inl two parts or members. The inner member 1 has an upright back, horizontal top and bottom plates or strips 2 and 3 each provided with a slot l4, and upturned lips 5 at their ends remote from the back plate l, andV through which screws are passed into the edge of the sash in order to secure the device within the recess R. The outer or movable member consists of an upright strap 7 recessed as at 8, 8, and having its upper and lower ends 9 turned in beneath the top and bottom plates 2 and 3 of the other member, and` then turned down into feet l0 which are preferably braced as at 11.

Specification of Letters Patent.

Applica-tion filed October 30, 1913.

Patented D131'. 24, 1914. serial No. 798,275. i

The brace passesthrough the slot 4 and is welded to a plate 13 overlying the top plate 2, and the lower brace'is similarly connected with another plate 14 underlying the bottom plate 3, the construction being such that the outer; member 7 may slide horizontally into the inner member 1. Springs 15 are interposed between the latter and the feet 10 to hold the outer member in a position where its braces 11 lie in the outer ends of the slots 4, or in other words where the outer member is projected toward the frame F.

One edge of the outer member 7 is turned up into lips 20, and to its other edge opposite the recesses `or notches 8, 8, may be attached other lips 21, or the latter if desired might be made integral with the face plate of this member and bent into position parallel with the lips 20. Through each pair of lips is passed a pin 22 on which is journaled the hub 23 of a small roller, next to which is a spiral spring 24 having one end secured to the hub and the other end 25 attached to the face plate of this member. The disposition of this spring is such that it normally tends to wind around said hub and turn the roller in one direction. Around the spring is a'guard 26 preferably composed ofthin sheet metal and having its extremities secured to the face plate 7, and this prevents the undue expansion or uncoiling of the spring. By preference there are two such rollers as shown, and around the hubs their bodies 29 should be formed of rubber and of a size to project through the openings or recesses 8 and make contact with the frame F.

In the application of this sash balance, a suitable recess R is cut in the sash S and the entire device inserted therein and Secured by the screws as best seen in Fig. 1. The rubber rollers now project through the openings 8 and make Contact with the inner face of the frame F between the beads which guide the sash in its rise and fall. The outer member 7 is pressed inward by hand and the rollers turned by hand until a certain tension is given to the springs, and this is donewhile the sash is raised. Thereafter, when the sash is drawn down the rollers wille-rotate and put tension on their springsl so that.when the operator again desires to raise the sash the uncoiling of the springs will assist. I would make said springs of such strength that their uncoiling wills-not be quite sufficient to raise the sash and yet it will be suiiicient to prevent the sash from running down by its own weight, with the idea that the sash may be moved by hand either upward or downward with ease. The parts are completely housed within the recess so that their presence may not be observed, and yet the balance comes out with the sash when the latter is removed from the frame.

I do not wish tb be limited to the materials or proportions of parts, Iand changes in details may be made without departing from the principle of the invention.

What is claimed as new is:

A sash balance of the character described comprising a irame consisting of a rear member and an apertured face member, said members having inturned overlapping .end portions adapted to form a sliding connection, friction rollers mounted in the face portion and projecting through said apertures, springs to offer a yielding resistance to rotation of said rollers, lugs at the ends of the face member, compression springs interposed between said lugs and the rear member, registering slots in the inturned end portions of the' frame members, and members engaging the said slotted end portions to limit the relative sliding movement of the frame members and also forming braces for said lugs. y

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN EDWARD RICHARDSON. Witnesses:

C. C. FRoE, D. ROBERT ToMLINsoN.' 

